Guide for cutting elbows



oct. 18, 1927.

C. H..WAGNER GUIDE FOR CUTTING ELBOWS Filed Nv.

5, 1926 2 Sheets-Sheet l Mg-Hi TTORNEYS;

oct. 1s, 1927. 1,646,129

C. H. WAGNER GUIDE FOR CUTTING ELBOWS Filed Nov. 5, 1926 EZ/91g! I N VEN TOR.

2 sheets-sheet z Patented Oct. 18, 1927.

CHARLES n. WAeuRfrMaLwwxrE. WISQQNSINMASSXGNOB ro L.; remmer: CM-1 ANY,.0F MILWAUKEE. WIseoNsiN. e Ceara-rameupr, wss-renew.

n A, empa fron 'CUTTING ELBOW@ appneaiibajaieq November 5, 1926.`s,er'ia1 No. niegan;

c This inventionrelates to improvements in guides for cutting elbow-s. y f I Heretofore, tinnersiinjcutting blanks Imtv/o Sha-ne for elbevs favriieieinfa have 01.11101 it necessary to mark the blank'a'nd 4mannal'ly guide, it with respect; t0 the mitten *Obviously, this 'procedure i`s^slow and inaccu- It' is, therefore, the primary yobject of the present invention to overcome the above ob`r iections' 'by irrovdilfis a grid,e for fettine elbows, comprising a cooperating trac-k and carriage. y j "y A further object ot the kinvention/fis'.to provide adevice yof the class'describedgin' cl'uding curved track disposed adJacenta cutter and adapted' to carry a carriage mounted .thereon which (holds the blank, the track being curved to Yproduce ya cut of a desired shape in the blank.

A further object of the invention is to 'prot vide a guide for cutting elbows .which is oi very simple construction, iseasily manipulated, is etiicient and rapid 1n operationais strong and durable, and is well adapted tor the purposes described.

With the above and other objects inv view, the inventionconsists of the improved guide for cutting elbows, and its parts and combinations as sety tort-h in the accompanyin claims, and all equivalents thereof.

In the accompanying drawings, in which the same reference characters indicate the same parts in all of the views:

Fig; 1 is a plan view ofthe Vimproved guide for cutting elbows;

Fig. 2 is a cross-sectional view thereof taken on line 2 2 of Fig. 1, and vonta larger scale; e

Fig. 3 is an enlarged sectional detail view of a portion of the carriage showing a wheel and its relation to the track;

Fig. 4 is an enlarged detail view, partly in section of one of the supports for the opposite side of the carriage; and

Fig. 5 is a plan view of a blank showing the line of cut. A

Referring vnow more particularly to the drawings, it will appear that thenumeral 8 indicates a rectangular base member adapted for mounting on a support or table 9,V

and held thereto in spaced relation withrespect to a cutter 10 by means of bolts 11, the cutter being secured to the table at one edge thereof and medially of the. ends of thetable.

`The u -per kface of the baseS has secured thereto means of angle Vmembers x12, an elongated ycoi`np`o1`1nd[curved track 213'. l The' curvature of theti'ack is geometrically'aseertai-ned, .and depends on the curvature bfi-the cut ofthe blank desired. Obviously, vgriousl7 curved tracks will result jvariously a cutblanks to form elbows'opredetermined angulrities. 1f

" .'Adfafi'teolA for `mounting `on the track {1;3 and base 8 is a carriage'll'lhaving failat supporti-ng upper surface'. The :forward side edgeofthe carriage is curved, f-asat A16,* tta-correspond ywith the' desired curvature ,of the eut lof the blank. V- The .orward *side Vof the. carriageis supported on the track a pair lof guide members l17,\vhi-1e lt-liefrear side' of the y carriage is 'supported on f the -fbase by afpai-rofrolleis11:8. y f

As shown clearly in Fig. 3, each guide member comprises a disc member 19 having revolubly secured to its lower face, by means of studs 20, a pair oi' spaced apart lrollers 21. The upper portion of the disc member 19 i's formed with a medial shoulder 22 into which the shank of a shouldered study 23 is threaded. Said stud 23 extends through an apertured plate 24 secured to the lower surface of the carriage, and thehead of the stud revolubly lodges in a recessk 25 in the carriage. lA bushing 26 surrounds a portion of the stud.k As` shown, the carriage is mounted so that' the track 13 is positioned between the rollers 21 and as the carriage is moved kalong the curved track, the rollers 21 are free to turn, as is the disc member 19. Ball bearings 27 are interposed between the disc member and the plate 24v in a race-way `provided therefor. Y

Fig. 4 illustrates in detail the construction oi one of the roller members 18 depending from the rear side of the carriage, and it will appear that a tubular depending portion 28 carries at its lower end a cupped member 29 which retains a large ball bearing 30.

A rectangular blank of rtin 31 is used with the machine, and the same is engaged by guides 32 and 33 securedto the upper face `of the carriage. The carriage is then started at the left in Fig.f1 and movedto the right along the curvedftrackand into cut the. blank along the line indicated at 35.

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wide blank, the forward guide 32 being tionand is well adapted for the purpose dividing the blank into two pieces, with correctly curved edges for a desired elbow. The carriage is also provided with a rear guide 36 which can be used for holding a removed in this event. 1

It should be understood that the curvature of the track may be varied, and depends in its shape on the shape of the cut desired. K Y j From the foregoing description, it will be seen that the improved guide for cutting elbows is kof very simple and novel construc@ described. y

kWhat l kclaim as my invention is: l f-.ILQA guide for cutting elbow blanks,vcom prising a curved track extending `adjacent acutter, vand a blankj holding carriage removably mounted ony said. track.

2., A guide for cutting elbow blanks, comev prising a compound curved track extending adjacent a cutter, and a blank holding carriage removably mounted on said track.

3.A lguide for cutting elbow blanks, comprising a curved track extending adjacent acutter, and a blank holding carriage removably mounted on said track, theline of travel of the carriage being longitudinally of the track and in a curve differing from the curvature thereof.

4. A guide for cutting elbow blanks, coinprising a single rail curved track extending adjacent a cutter, and a blank holding carriage removably mounted on said track and movable therealong.

5. A guide `for cutting elbow blanks, comprisinga base member mounted in juxtapositionvto a cutter, a curved'track ,carried by said base member, and a carriage removably'mounteddonthe base member and' the track and guided by the latter with respect to 'said fcutter.

6. In combination, a supporting member, a cutter mounted thereadjacent and medially of its ends,l a compound curved single rail track mounted' on said supportingme'mber'and `extending adjacent said `cutter,fa carriage removably mounted on said track and movable therealong and longitudinally of the -supporting member, and a sheet ot' metal engaged by said carriage and adapted to be cut by said cutter in a curved line diering from the curvature of said track.

Intestimony whereof, I ax my signature.

' CHARLES `H. WAGNER. 

